Hi, this is more of a principal question. We operate the following HA/Failover Setup:
Frontend: Apache 2.2.21 + mod_jk 1.2.32 Backend: 6 x Tomcat 7.0.32 We have two types of clients. First there are interactive clients that connect via a browser. Second we have batch clients that are run via a queuing system (SGE) on a cluster of Linux servers. Those batch jobs do the "dirty work" like transferring mass data and other long running stuff that we do not want to run on the backends themselves. Now sometimes the clients get into trouble and we need to find out what is going on. First step is to look into the tomcat log files. For that of course we need to know which of the instances is serving the client (we do session persistence, so the clients stay on their servers unless there is a failover). For the interactive clients this is usually easy. We can have the users look at the jvmroute part of the session cookie. The problem arises on the batch clients. How to ask them? :-) So, the question is whether there is a way of finding out from the outside which tomcat a client-session is talking to? The connections are of course all through the Apache frontend, which does not make it easier. Any insight (or pointer to the right manual) would be highly appreciated. Ah yes, modifying the application to just log the cookie is of course possible, but for reasons, not to be discussable here, political difficult. Thanks in advance Martin --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
